Acromioclavicular joint dislocation is a common clinical shoulder injury, and it is more common in young patients. The treatment requirements are high. If improperly handled, it will cause shoulder pain and shoulder joint dysfunction. The current view is that for Rockwood type I and Ⅱ acromioclavicular joint dislocation, conservative treatment can achieve good results. For Rockwood type Ⅲ acromioclavicular joint dislocation, it depends on the specific situation, and Rockwood typeⅣ,Ⅴ, Ⅵ acromioclavicular joint dislocation should be treated surgically. However, there are various treatment methods for acromioclavicular joint surgery, and there is no unified understanding. At present, it is more inclined to anatomical reconstruction and minimally invasive surgery, including Tightrope technology, autologous/artificial tendon, and threaded anchors to reconstruct the coracoclavicular ligament, but there are disadvantages such as poor suture/tendon strength, subluxation of the acromioclavicular joint, and iatrogenic fracture.

To investigate the clinical effect of modified titanium cable system combined with acromioclavicular ligament repair for treatment of acromioclavicular joint dislocation.

From January 2014 to March 2019, 21 patients with acromioclavicular joint dislocation were treated with modified titanium cable system and acromioclavicular ligament repair in our hospital, and the clinical data, including dislocation type, injury causes, operation time, range of joint motion, X-ray findings, American shoulder and elbow association (ASES) score, Constant shoulder score, and Karlsson postoperative evaluation were retrospectively analyzed.

All patients were followed up for (13.05±2.62) months.The operation time was (50.57±8.13) minutes, and the waiting time before surgery was (2.71±1.35) days. The ranges of shoulder motion were (167.14 ± 5.19) ° of forward flexion, (41.14 ± 2.20) °, abduction (167.24±7.07) ° of posterior extension, (52.10±4.99) ° external rotation, and (83.33 ± 3.61) ° internal rotation. The ASES score was (94.19±4.01) (86.67-100) points, and the Constant-Murley score was (92.95±4.98) (78-99) points. According to Karlsson's postoperative evaluation criteria, 15 cases (71.4%) were excellent and 6 cases (28.6%) were good.

Modified titanium cable system combined with acromioclavicular ligament repair technology can achieve good clinical results in the treatment of acromioclavicular joint dislocation.